1224132505 has 8 divisors (see below), whose sum is σ = 1469335752. Its totient is φ = 979054848.

The previous prime is 1224132493. The next prime is 1224132509. The reversal of 1224132505 is 5052314221.

It can be written as a sum of positive squares in 4 ways, for example, as 796594176 + 427538329 = 28224^2 + 20677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224132505 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1224132505.

It is not an unprimeable number, because it can be changed into a prime (1224132509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8422 + ... + 50191.

It is an arithmetic number, because the mean of its divisors is an integer number (183666969).

Almost surely, 2^1224132505 is an apocalyptic number.

It is an amenable number.

1224132505 is a deficient number, since it is larger than the sum of its proper divisors (245203247).

1224132505 is an equidigital number, since it uses as much as digits as its factorization.

1224132505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62795.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1224132505 is about 34987.6050194923. The cubic root of 1224132505 is about 1069.7348471005.

Adding to 1224132505 its reverse (5052314221), we get a palindrome (6276446726).

The spelling of 1224132505 in words is "one billion, two hundred twenty-four million, one hundred thirty-two thousand, five hundred five".